SOURCE FOLLOWER BASED ON PMOS TRANSISTOR

摘要

The present invention belongs to the technical field of source followers, and provides a source follower based on a PMOS transistor. The source follower comprises a current source and a PMOS transistor used as an input component. A bulk of the PMOS transistor is connected with an input end (Vin) of the source follower, so that a voltage (Vsb) between a source and a bulk of an N-well NMOS transistor is basically maintained constant in a condition that an input signal changes. The source follower has small distortion and good linearity, and is especially suitable for being used in a high-speed heavy-load scenario.